public int buildCommunities(Graph hgraph) {
int[] comStructure = new int[hgraph.getNodeCount()];
computeModularity(hgraph, structure, comStructure, resolution);
Set<Integer> communityCount = new HashSet<>();
int idx = 0;
for (Node n : hgraph.getNodes()) {
communityCount.add(comStructure[idx]);
n.setProperty("communityID", comStructure[idx++]);
}
return communityCount.size();
}
